From what I’ve gathered, es is often reduced to 's and gets phonologically attached to the verb in spoken German in simple indicative and imperative sentences (“wie geht’s”, “ich versuch’s”, “tu’s nicht” etc).
This kind of reduction exits in other languages too, but it’s blocked in some conditions. For example, in English you can say “I’m done” but not “who do you think I’m?”.
What are the restrictions on the German es?
Question based on me texting someone and having to write “Er … <omitted text> und hasste’s wenn ich… <ommitted text>.”
I later went to check my grammar a bit, and I couldn’t find “hasste’s” used anywhere on the internet. If this formulation is wrong, what’s the reason why this reduction can’t be used?
I don’t know about the grammar but will give my 2 cents regardless.
I just went through some examples I could come up with in my head and would only use it in spoken German mostly in Präsens or Perfekt tense (which is mostly due to those 2 being used in spoken German the most I would presume). But also in Futur 1 and 2. Same for informal chats on Whatsapp.
Usually I use it with general statements about a subject in Präsens or as a general reduction that is almost always acceptable to me to shorten the sentence in Perfekt
I don’t use the apostrophe personally unless Autocorrect puts it in there for me.
Präsens:
Perfekt:
Futur 1: Ich werd’s machen
Futur 2: Ich werd’s dann vorbereitet haben.
The example you gave is in Plusquamperfekt and I would generally not use the reduction there. Same for Präteritum.
Hope this helps.
Oh good point, contributing to the hypothesis that “'s” can’t occur when the preceding word ends in “e”. “Habe’s” is weird, but “hab’s” works because “habe” is already habitually shortened to “hab”, same for “werd(e)”.